mini-roundabout

Etymology
From.

Noun

 * 1)  A small roundabout that is either flush to the road surface (painted on) or slightly raised.
 * 2) * 2008, Driving Standards Agency (Great Britain), The Official DSA Guide to Driving Buses and Coaches, page 296,
 * Although traffic is advised not to carry out U-turn manoeuvres at a mini-roundabout, be alert for any oncoming traffic doing so.
 * Although traffic is advised not to carry out U-turn manoeuvres at a mini-roundabout, be alert for any oncoming traffic doing so.